I’ve been having trouble finding a solid answer to P30x codes, cylinders, and firing orders. For example, on a 6-cylinder engine with a P304 code saying a cylinder #4 misfire, I’ve seen information that it’s the 4th cylinder in the firing order, which may not actually be cylinder #4. So if the firing order is 1-4-2-5-3-6, I would think that it’s really cylinder #5 to investigate because it’s the 4th cylinder in the firing order. But I see people in YouTube videos going straight for cylinder #4 (understandably because that’s what the code says) and not considering the firing order. Can anyone shed any light on this for me?
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